JPH02141392A - Voltage generating device for ship pusher - Google Patents

Abstract

PURPOSE:To reduce a mounting space and to reduce the number of parts by a method wherein a pneumatic compressor to feed compressed air to a fuel injection and a generated are mounted to an engine body through a common drive shaft and are driven in linkage with each other through rotation of a crank shaft. CONSTITUTION:A 2-cycle V-internal combustion engine 11 for an outboard motor is provided at a head 20 of an outer cylinder 13 with a fuel injection device 21, and fuel is fed to the fuel injection device 21 through a fuel feed pipe 22. Simultaneously, compressed air is fed thereto through a compressed air feed pipe 23, and by the feed of the fuel to a combustion chamber by means of compressed air, injected fuel is atomized. In this case, a generator 24 with a compressor is mounted outside the one bank of an internal combustion engine 11 and between the cylinder 13 and a suction pipe 15. The generator 24 with a compressor is formed such that a generator 27 and an air compressor 28 are formed integrally with each other so as to use a single drive shaft 29 in common, and through rotation of a crank shaft 18, drive is effected through the medium of a belt 40.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a voltage generator for a marine vessel propulsion device such as an outboard motor.

[Prior Art] Conventionally, this is the only marine propulsion device such as an outboard motor that is equipped with a fuel injection device that injects fuel T81 directly into the combustion chamber! (Some things are made up of having institutions.

In this internal combustion engine, compressed air is also supplied at the same time as fuel is supplied to the injector, and the fuel sent to the injector a is sent to the combustion chamber using compressed air, thereby atomizing the injected fuel. be. In this case, since it is difficult to obtain power from the outside in a marine propulsion device, an air compressor is installed around the engine body, and the air compressor is driven by the rotational force of the engine's crankshaft.

Incidentally, an internal combustion engine for a marine vessel propulsion device usually has a generator installed around the engine body, which is driven by the rotational force of the engine's crankshaft.

[Problems to be Solved by the Invention] However, when installing an air compressor together with a generator around the engine body, in addition to the generator body and the compressor body, power transmission devices such as a pulley and a belt for the generator are required. Many parts are required, including members and power transmission members such as pulley belts for the compressor. This has the disadvantage that it becomes necessary to secure a space for mounting a large number of parts around the engine main body, impairing the ability to make the propulsion machine more compact, and that the handling of the component parts becomes complicated.

In an outboard motor in which the main body of the engine is covered with a cowling, it is very difficult to secure mounting space for the above-mentioned multiple parts in the narrow and limited space within the cowling.

An object of the present invention is to reduce the installation space and the number of power transmission parts when installing an air compressor together with a generator around an engine body.

[Means for Solving the Problems] The present invention as set forth in claim 1 provides a voltage generating device for a 1-ft marine vessel having an internal combustion engine equipped with a fuel injection device, which supplies compressed air to the fuel injection device. An air compressor and a generator are mutually integrated and attached to the engine body so as to share a single drive shaft, and the crankshaft of the internal combustion engine and the drive shaft are connected by a power transmission member. This is how it was done.

The present invention according to claim 2 is characterized in that the internal combustion engine has cylinders of approximately V.
It is a V-type engine arranged in a letter shape, and is equipped with an intake pipe for introducing fresh air into the crank chamber, and the integrated air compressor and generator are located outside the letter 7 of the cylinder, and It is arranged in a space on the side of the intake pipe.

[Function] According to the present invention as set forth in claim 1, the generator and the air compressor are integrated and attached to the engine body, and the generator and the air compressor share a single drive shaft. , since they are driven by crankshaft rotational force, the power transmission members are also common. Therefore, the installation space that must be secured around the engine body is reduced, and the compactness of the propulsion device is not impaired. Furthermore, the number of power transmission parts can be reduced, and the handling of the component parts becomes easier.

According to the present invention as set forth in claim 2, the integrated generator and air compressor are installed in the recessed space between the cylinder and the intake pipe around the engine body, and as a result, the power generation is reduced. The drive shaft and crankshaft of the air compressor and the air compressor can be brought closer together, making the installation more compact.

Note that when the present invention as set forth in claim 1.2 above is applied to an outboard motor whose engine body is covered with a cowling, the generator and air compressor can be installed in the cowling even though the space inside the cowling is narrow. It can be easily installed around the engine body without much difficulty.

[Embodiment] Fig. 1 is a schematic diagram showing the main parts of an example of an outboard motor to which the present invention is applied, and Fig. 2 is a sectional view showing an example of a generator with a compressor.
FIG. 3 is a schematic diagram showing the main parts of another example of an outboard motor to which the present invention is applied, FIG. 4 is a sectional view showing another example of a generator with a compressor, and FIG. FIG. 2 is a sectional view showing a flywheel suitable for use in practice.

11.DELTA. is a schematic diagram showing the engine unit portion of the outboard motor 10, where 11 is an internal combustion engine and 12 is a cowling.

The internal combustion engine 11 has a two-stroke V-type fuel injection device, and an engine body 14 having left and right bank cylinders 13 having a substantially V-shape, and an intake pipe 1 in which a butterfly hartz is filfted.
5. It is equipped with an intake box 17. Further, the internal combustion engine 11 has a crankshaft 18 disposed vertically, and a flywheel 19 at the upper end of the crankshaft 18.

The internal combustion engine 11 includes a fuel injection device 21 in the head 20 of each cylinder 13 . The fuel injection device 'f1.21 is supplied with fuel from a fuel pump (not shown) through a fuel supply pipe 22, and is also supplied with compressed air from an air compressor (described later) through a compressed air supply pipe 23, so that the fuel is compressed. By sending air to the combustion chamber, the injected fuel is atomized.

Here, the internal combustion engine 11 is located outside of the left bank and has a pressure Ii! in the space between the cylinder 13 and the intake pipe 15. A machine generator A24 is installed. 25 and 26 are mounting rackets provided on the engine body 14.

Pressure 1? As shown in FIG. 2, the i-equipped generator 24 is constructed by integrating a generator 27 and an air compressor 28 so that both share a single drive shaft 29. .

A pulley 30 is provided at the upper end of the drive shaft 29.

Note that the air compressor 28 includes a cylinder 31, a piston 32,
It is of a piston type consisting of a connecting rod 33, and the rotational force of a drive shaft 29 is transmitted via gears 34, 35 and a crank pin 36. 37 is a suction port, and 38 is a discharge port.

Furthermore, the generator 24 with one pressure Ii generator has a belt 40 wound around the pulley 30 provided on the drive shaft 29 and a pulley 39 provided on the crankshaft 18 to transmit the rotational force of the crankshaft 18, and generate electricity. The air compressor 27 and the air compressor 28 can be driven respectively.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the generator 27 and the air compressor 28 are integrated as the compressor-equipped generator 24 and attached to the engine body 14, and the generator 27 and the air compressor 11? Since the r machine 28 shares a single drive shaft 29 and is driven by the rotational force of the crankshaft 18, the pulley 30.
39, the belt 40 will also be shared. Therefore, the installation space that must be secured around the engine main body 14 is reduced, and the compactness of the outboard Psilo is not impaired.

Furthermore, the number of power transmission parts can be reduced, and the handling of the component parts becomes easier.

In addition, the integrated compressor-equipped generator 24 is connected to the engine body 14.
It is installed in the recessed space between the surrounding cylinder 13 and the intake pipe 15, and as a result, the drive shaft 29 of the generator 27 and air compressor 28 can be brought closer to the crankshaft 18, making the installation more compact. It's going to change.

Furthermore, although the engine body 14 is covered by the color link 12 and the space within the cowling 12 is narrow, the generator 27 and the pneumatic III engine 28 can be easily moved around the engine body 14 without much difficulty. I can install it.

In addition, in the above-mentioned outboard motor 10, the pressure generator equipped generator 24 is as follows:
As shown by the chain line in FIG. 1, it may be provided outside the right bank of the engine 11 and in the space between the cylinder 13 and the intake pipe 15.

The outboard motor 50 shown in FIG. 3 differs from the outboard motor 10 described above as follows:
Internal combustion engine 51 or intake pipe 15 corresponding to each V-shaped bank
It is a two-stroke V-type fuel injection engine configured by arranging cylinders A and 15B on the same axis as cylinders 13A and 13B of each bank, and a generator 24 with a compressor is located outside both banks of the engine 51 This is because it is installed in the space between the two classes of trachea 15A and 15B.

In addition, in the above-mentioned outboard motor 50, the pressure generator equipped generator 24 is as follows.
As shown by the chain line in FIG. 3, the cylinders 13A, 13B and the intake pipes 15A, 15
It may be provided in the space between B.

Furthermore, in implementing the present invention, a generator with a compressor 60 shown in FIG. 4 may be used. The compressor-equipped generator 60 is configured by integrating a generator 61 and an air compressor 62 so that both share a single drive shaft 63.

64 is a pulley. The air compressor 62 is of a vane type, and has a rotor 65 directly connected to a drive shaft 63.

66 is a vane.

Further, in carrying out the present invention, the flywheel 19 provided at the upper end of the crankshaft 18 is as shown in FIG.
A pulley portion 68 may be provided at the bottom of the ring gear 67. The belt 40 for transmitting power to the compressor-equipped generator 24 can be wound around the pulley portion 68, thereby allowing the compressor-equipped generator 24 to be installed closer to the engine main body 14 side.

[Effects of the Invention] As described above, according to the present invention, when installing an air compressor together with a generator around an engine main body, it is possible to reduce the installation space and the number of power transmission parts.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the essential parts of an example of an outboard motor to which the present invention is applied; FIG. 2 is a sectional view showing an example of a generator with a compressor;
FIG. 3 is a schematic diagram showing the main parts of another example of an outboard motor to which the present invention is applied, FIG. 4 is a sectional view showing another example of a generator with a pressure generator, and FIG. FIG. 2 is a sectional view showing a flywheel suitable for use in implementing the above. DESCRIPTION OF SYMBOLS 10... Outboard motor, 11... Internal combustion engine, 13... Cylinder, 14... Engine body, 15... Intake pipe, 18... Crankshaft, 21... Fuel injection device, 24... Generator with compressor, 27... Generator, 28... Air pressure 1ilIv1. 30... Fully 39... Pulley 40... Belt, 50... Outboard motor, 51... Internal combustion engine.

Claims (2)

[Claims] (1) In a voltage generator for a marine propulsion device that has an internal combustion engine equipped with a fuel injection device, the air compressor that feeds compressed air to the fuel injection device and the generator share a single drive shaft. 1. A voltage generating device for a marine vessel propulsion device, characterized in that the crankshaft of an internal combustion engine and the drive shaft are connected by a power transmission member. (2) The internal combustion engine is a V-type engine with cylinders arranged in a substantially V-shape, and includes an intake pipe for introducing fresh air into the crank chamber, and the integrated air compressor and generator. 2. The voltage generating device for a marine vessel propulsion device according to claim 1, wherein the voltage generator is disposed outside the V-shape of the cylinder and in a space to the side of the intake pipe.